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This article discusses key best practices to deploy your Access database. For example, if you have geographic data, you can add a hierarchy that has country at the top, and drills down to region, state, and city.

A hierarchy is a list of columns that roll up to a single item in a Pivot or Power View report. A hierarchy appears as a single object in the Field List. Hierarchies make it easier for users to select and navigate common paths of data when creating reports and pivot tables.

The training is aimed at users that do not have a background knowledge in data modeling for analytical systems and reporting. The goal of the course is introduce the primary concepts of dimensional modeling, using practical examples and demos to illustrate how to obtain the desired result without having to write complex DAX expressions.

Creating a proper data model simplifies the code to write and improves the performance. The course is made of minutes of lectures.

You can watch the videos at any time and the system will keep track of your advances. Within the course you can download the slides and the Power BI files used in the demos.

With PowerPivot, you can mash up large volumes of data from various sources, perform information analysis rapidly, and share insights easily. In both Excel and in PowerPivot, you can create a Data Model, a collection of tables with relationships. The data model you see in a workbook in Excel is the same data model you see in the PowerPivot window. Any data you import into Excel is available in PowerPivot, and vice versa. Was this reply helpful?

Yes No. Sorry this didn't help. Choose where you want to search below Search Search the Community. Hi, I have three large tables that I want to associate via a key. Can you please point me in the right direction? I actually have several large tables but I think starting with 3 will get me going. Thanks in advance, Barry. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.

I have the same question 0. Report abuse. Details required :. Cancel Submit. Rohn MVP. In theory, for small tables you don't need an index, just a primary key A "primary" key is a field or fields that allow you to uniquely retrieve a row from a table. A "secondary" key is a field or fields that allow alternate access to data in a table. Thanks for your feedback. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site.

Ken Sheridan. Firstly you need to identify the candidate keys in the tables. A candidate key is any column or combination of columns whose values are distinct in the table. A table might have a number of candidate keys, of which one would be designated as the primary key, in which case the others would each be included in a unique index Taking your SalesByCustomer table as an example, if all company names are distinct, and a customer makes only one purchase on any given date, then CompanyName and SaleDate would be a candidate key.

If a customer can purchase multiple products on the same day, but not purchase the same product twice in one day, then CompanyName, SaleDate and Product would be a candidate key. A candidate key of Contacts would be CompanyName, so you could make this the primary key, and create a relationship with SalesByCustomer on CompanyName. The BackLog table can then reference the former in a relationship. As described above all of the keys are 'natural' keys.

Bottom line: I think my design logic is wrong. Here's what I want to do: I have list of philanthropic foundations that, among them, provide a variety of conservation grants. Then I have a variety of conservation projects that my nonprofit group seeks funding for.

What I want to do is match up our project needs with the appropriate grantors. Here's a concrete example: We have project types 1, 2, 3 and 4. Grantor A will fund project types 1 and 2. Grantor B will fund project types 1, 3 and 4. Grantor C will fund project type 2. And so on. So in the user interface Form I'm building I need to show this information.

Note that any given grantor could have anywhere from one to four project types that match our needs. There would never be zero project types, as that grantor simply would not be listed. I've solved this problem so far -- in a way that I know is bad design -- by simply adding a ProjectType1 field, ProjectType2 field, etc, in the Grantor Table, each of which looks up a value in a Project Types Table that I've created.

I used the Lookup Wizard to create the look-up relationships. You'll find the file as StudentCourses. Note that if you are using an earlier version of Access you might find that the colour of some form objects such as buttons shows incorrectly and you will need to amend the form design accordingly. If you have difficulty opening the link copy its text NB, not the link location and paste it into your browser's address bar. What this little demo file illustrates is a many-to-many relationship type between students and courses.

A many-to-many relationship type is modelled by a third table which resolves it into two or more one-to-may relationship types. You have a many-to-many relationship type between grantors and project types, so you would model it by a table which has two foreign keys, GrantorID and ProjectTypeID say which references the primary keys of Grantors and ProjectTypes respectively.

The primary key of this table is a composite one made up of the two foreign keys columns. This type of table is sometimes colloquially referred to as a 'junction' table.

A project types form for instance would have a subform based on the table which models the many-to-many relationship type. Alternatively the parent form could be a grantors for, depending on whether you want to enter grantors per project type, or vice versa. Thanks for your help. Actually, thanks to everyone. I think I finally figured out the junction table join. I've attached a picture of that.

But there's still a disconnect between the relationships and the values they represent. That is, I have no idea how to populate the junction table, not with the keys, but with the values the keys represent. So I've attached two more pictures as well: One is my attempt at a subform; you can see it is only showing a number, not an actual grant type description.

But in actual fact, what I really need is not a subform, but a multi-selection list. So I've also attached a picture of one of the decision points in the list box Wizard, since I'm not sure what I'm supposed to select. Details required : characters remaining Cancel Submit. Tables are kept "under the hood": they typically WILL have numeric links to other tables, not the actual text values. That's fine; you'll only look at the contents of your tables while you're developing or debugging the database, and your end users should never see them at all!

Instead, all interaction with your data should be done using Forms usually with Subforms and other kinds of controls.

This will let you select as many rows of grant types as you like. You have them reversed. It's doable if you really need that user interface but in practice subforms are very user friendly. Second, I agree with John, that, while a multi-select listbox might be a little easier for the user, its a lot hard for the developer.

Using a Continuous form subform makes it easier to record, display and modify the list if grant types for a Grantor, You could also have another form where Grant-Type is the source of the main form and the subform displays the grantors associated with that grant type.

So you can enter the data either way. Third, as John said, the Junction table is populated with the key values. That is what key values are for. You will use a query that joins the three tables and pulls the name columns when you want to display the names. Choose where you want to search below Search Search the Community. Anita Rose S. I'm using Access This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.

I have the same question Report abuse. Details required :. Cancel Submit. Previous Next. Daniel Pineault MVP. First you need to create the proper table structure in both relating tables. Hope this helps. Thanks for your feedback. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site.

John W. Scottgem MVP. The name you assign will usually be the same as the PK it will be related to, As John said a FK is defined by usage, nothing else. Ken Sheridan. It's not quite true to say that a foreign key is defined by usage alone.

When using the graphical design interface to create tables, a very important point to understand is that simply adding a column or columns to one table which corresponds to the primary key of another table does not in itself make it a foreign key. A relationship must also be created in which referential integrity is enforced.

Otherwise it would be possible to insert values into the column in the referencing table which do not have a match in the primary key column of the referenced table.

The column in the referencing table is not in that case a true foreign key as, to be so, it must imply a constraint on the values which can be inserted. To call a column which does not imply a constraint a foreign key would be a very loose and inaccurate use of the term.

Albert D. Kallal MVP. You have some great answers here. However, your question remains un-answered.

 

Free Microsoft Office Product Key.Correlating primary and foreign key between large tables in Access - Microsoft Community

 

It's a field in your lookup wizard? When I click on the field to which i add this lookup table to choose a value it looks like this: "KSK Einzelhandel 1" — user It looks like that because you set it up like that using Wizard.

So what do you want now? How do you want it to look like? So remove the "1" and replace it with values the tables holds in the row of the "1". Remake your LookUp Column. Add a comment. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first. Improve this answer.

June7 June7 Indeed table lookups lead to very bad habits like direct edits on the tables. Sign up or log in Sign up using Google.

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A Microsoft Office product key activates the software to its premium version. The premium or paid version gives you access to all the editions of Office To download Microsoft Office free you visit here. I also sell Microsoft Office Product Key.

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